A lot of great games have already been mentioned. Here are some options that have not been mentioned that I like:
Assault Android Cactus - twin stick shooter (to access the start menu, you must be inside of a stage, not in the map)
Jamestown - bullet hell (get original game, Jamestown+ does not work on Steam Deck)
Broforce - 2D side scrolling action game (there’s a free version, Expendabros, that you can try out)
Gauntlet - dungeon crawler
Guns, Gore & Cannoli - side-scrolling shooter (it plays on Steam Deck, but throws an error when you exit, so you might have to close it directly on the Steam Deck or mess with compatibility options, I’m not sure)
Hammer Watch - dungeon crawler (need to grab a community controller layout - there is one specifically for co-op)
Monaco - stealth co-op heist
Human Fall Flat - physics puzzle adventure
Wizard of Legend - roguelike
Divinity Original Sin - turn based rpg (might want to check out the second entry as it is supposed to be even better)
These games are in my backlog and verified on Steam Deck, but I haven’t played them yet:
A lot of great games have already been mentioned. Here are some options that have not been mentioned that I like:
These games are in my backlog and verified on Steam Deck, but I haven’t played them yet: